01: /*
02: * gnu/regexp/RETokenRange.java
03: * Copyright (C) 1998-2001 Wes Biggs
04: *
05: * This library is free software; you can redistribute it and/or modify
06: * it under the terms of the GNU Lesser General Public License as published
07: * by the Free Software Foundation; either version 2.1 of the License, or
08: * (at your option) any later version.
09: *
10: * This library is distributed in the hope that it will be useful,
11: * but WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13: * GNU Lesser General Public License for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public License
16: * along with this program; if not, write to the Free Software
17: * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18: */
19:
20: package gnu.regexp;
21:
22: final class RETokenRange extends REToken {
23: private char lo, hi;
24: private boolean insens;
25:
26: RETokenRange(int subIndex, char lo, char hi, boolean ins) {
27: super (subIndex);
28: this .lo = (insens = ins) ? Character.toLowerCase(lo) : lo;
29: this .hi = ins ? Character.toLowerCase(hi) : hi;
30: }
31:
32: int getMinimumLength() {
33: return 1;
34: }
35:
36: boolean match(CharIndexed input, REMatch mymatch) {
37: char c = input.charAt(mymatch.index);
38: if (c == CharIndexed.OUT_OF_BOUNDS)
39: return false;
40: if (insens)
41: c = Character.toLowerCase(c);
42: if ((c >= lo) && (c <= hi)) {
43: ++mymatch.index;
44: return next(input, mymatch);
45: }
46: return false;
47: }
48:
49: void dump(StringBuffer os) {
50: os.append(lo).append('-').append(hi);
51: }
52: }
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